# Measurement of the B<inf>s</inf><sup>0</sup>→J/ψη lifetime

Aaij, R, Adeva, B, Adinolfi, M, Ajaltouni, Z, Akar, S, Albrecht, J, Alessio, F, Alexander, M, Ali, S, Alkhazov, G
et al (show 90 more authors) (2016) Measurement of the B<inf>s</inf><sup>0</sup>→J/ψη lifetime. Physics Letters, Section B: Nuclear, Elementary Particle and High-Energy Physics, 762. 484 - 492.

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## Abstract

Using a data set corresponding to an integrated luminosity of 3 fb , collected by the LHCb experiment in pp collisions at centre-of-mass energies of 7 and 8 TeV, the effective lifetime in the B →J/ψη decay mode, τ , is measured to beτ =1.479±0.034 (stat)±0.011 (syst) ps. Assuming CP conservation, τ corresponds to the lifetime of the light B mass eigenstate. This is the first measurement of the effective lifetime in this decay mode. −1 0 0 s eff eff eff s

Item Type: Article Symplectic Admin 01 Dec 2016 11:33 07 May 2021 07:29 10.1016/j.physletb.2016.10.006 https://arxiv.org/abs/1607.06314v1 https://livrepository.liverpool.ac.uk/id/eprint/3004715